Lower's nebula (Sh2-261) in Hα-SII/OIII/OIII+rgb
Another nice object from the amazing Sharpless catalog.
Close to 80 hours of integration time and really surprised by the blue bubble that appears in the middle (not the bright blue triangle, the big blue subtle bubble on top of that) .
As usual on my latest pictures, I used this "natural" palette that I really like so much.
The process was long and hard and the acquisition also due to the weather in my observatory's region.
This object was never something prioritari on my desk but I am really happy with the results, even with the hard work to process all this data.
Technical card
Imaging telescopes or lenses: Teleskop Service TS Photoline 107mm f/6.5 Super-Apo · Altair Astro RC250-TT 10" RC Truss Tube
Imaging cameras: ZWO ASI183MM-Cool · ZWO ASI1600MM-Cool
Mounts: Skywatcher EQ6R Pro · Mesu 200 Mk2
Guiding telescopes or lenses: Celestron OAG Deluxe · Teleskop Service TSOAG9 Off-Axis Guider
Guiding cameras: ZWO ASI290 Mini · ZWO ASI174 Mini
Focal reducers: Riccardi Reducer/Flattener 0.75x · Telescope-Service TS 2" Flattener
Software: Pleiades Astrophoto PixInsight · Seqence Generator Pro
Filters: Astrodon O-III 36mm - 5nm · Astrodon S-II 36mm - 5nm · Astrodon R Gen.2 E-series 36mm · Astrodon G Gen.2 E-series 36mm · Astrodon B Gen.2 E-series 36mm · Astrodon HA 36mm - 5nm · Astrodon L Gen.2 E-series 36mm
Accessory: ZWO EFW · Pegasus Astro Falcon Rotator · Pegasus Astro Ultimate Powerbox v2 · Astrolink 4.0 mini · MoonLite NiteCrawler WR30 · TALON6 R.O.R · MoonLite CSL 2.5" Focuser with High Res Stepper Motor
Dates:Dec. 17, 2020 , Jan. 6, 2021 , Jan. 18, 2021 , Jan. 27, 2021 , Feb. 10, 2021 , Feb. 11, 2021
Frames:
Astrodon B Gen.2 E-series 36mm: 140x30" (gain: 75.00) -20C bin 1x1
Astrodon G Gen.2 E-series 36mm: 140x30" (gain: 75.00) -20C bin 1x1
Astrodon HA 36mm - 5nm: 240x600" (gain: 200.00) -20C bin 1x1
Astrodon O-III 36mm - 5nm: 107x600" (gain: 111.00) -15C bin 1x1
Astrodon R Gen.2 E-series 36mm: 140x30" (gain: 75.00) -20C bin 1x1
Astrodon S-II 36mm - 5nm: 107x600" (gain: 111.00) -15C bin 1x1
Integration: 79.2 hours
Avg. Moon age: 16.91 days
Avg. Moon phase: 31.21%
Astrometry.net job: 4352477
RA center: 6h 8' 57"
DEC center: +15° 45' 27"
Pixel scale: 1.007 arcsec/pixel
Orientation: 0.172 degrees
Field radius: 0.408 degrees
Lower's nebula (Sh2-261) in Hα-SII/OIII/OIII+rgb
Another nice object from the amazing Sharpless catalog.
Close to 80 hours of integration time and really surprised by the blue bubble that appears in the middle (not the bright blue triangle, the big blue subtle bubble on top of that) .
As usual on my latest pictures, I used this "natural" palette that I really like so much.
The process was long and hard and the acquisition also due to the weather in my observatory's region.
This object was never something prioritari on my desk but I am really happy with the results, even with the hard work to process all this data.
Technical card
Imaging telescopes or lenses: Teleskop Service TS Photoline 107mm f/6.5 Super-Apo · Altair Astro RC250-TT 10" RC Truss Tube
Imaging cameras: ZWO ASI183MM-Cool · ZWO ASI1600MM-Cool
Mounts: Skywatcher EQ6R Pro · Mesu 200 Mk2
Guiding telescopes or lenses: Celestron OAG Deluxe · Teleskop Service TSOAG9 Off-Axis Guider
Guiding cameras: ZWO ASI290 Mini · ZWO ASI174 Mini
Focal reducers: Riccardi Reducer/Flattener 0.75x · Telescope-Service TS 2" Flattener
Software: Pleiades Astrophoto PixInsight · Seqence Generator Pro
Filters: Astrodon O-III 36mm - 5nm · Astrodon S-II 36mm - 5nm · Astrodon R Gen.2 E-series 36mm · Astrodon G Gen.2 E-series 36mm · Astrodon B Gen.2 E-series 36mm · Astrodon HA 36mm - 5nm · Astrodon L Gen.2 E-series 36mm
Accessory: ZWO EFW · Pegasus Astro Falcon Rotator · Pegasus Astro Ultimate Powerbox v2 · Astrolink 4.0 mini · MoonLite NiteCrawler WR30 · TALON6 R.O.R · MoonLite CSL 2.5" Focuser with High Res Stepper Motor
Dates:Dec. 17, 2020 , Jan. 6, 2021 , Jan. 18, 2021 , Jan. 27, 2021 , Feb. 10, 2021 , Feb. 11, 2021
Frames:
Astrodon B Gen.2 E-series 36mm: 140x30" (gain: 75.00) -20C bin 1x1
Astrodon G Gen.2 E-series 36mm: 140x30" (gain: 75.00) -20C bin 1x1
Astrodon HA 36mm - 5nm: 240x600" (gain: 200.00) -20C bin 1x1
Astrodon O-III 36mm - 5nm: 107x600" (gain: 111.00) -15C bin 1x1
Astrodon R Gen.2 E-series 36mm: 140x30" (gain: 75.00) -20C bin 1x1
Astrodon S-II 36mm - 5nm: 107x600" (gain: 111.00) -15C bin 1x1
Integration: 79.2 hours
Avg. Moon age: 16.91 days
Avg. Moon phase: 31.21%
Astrometry.net job: 4352477
RA center: 6h 8' 57"
DEC center: +15° 45' 27"
Pixel scale: 1.007 arcsec/pixel
Orientation: 0.172 degrees
Field radius: 0.408 degrees